/Engine/Source/Runtime/InteractiveToolsFramework/Public/InteractiveToolBuilder.h
AUInteractiveToolWithToolTargetsBuildercreates a new instance of an InteractiveTool that uses tool targets. See ToolTarget.h for more information on tool targets and their usage. This class defines the common interface(s) for defining the tool target requirements of the tool it builds. This is an abstract base class, you must subclass it in order to create your particular Tool instance.
class UInteractiveToolWithToolTargetsBuilder : public [UInteractiveToolBuilder](API\Runtime\InteractiveToolsFramework\UInteractiveToolBuilder)